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cricket20 [7]
3 years ago
15

How many ways are there to distribute n graded homeworks to n students such that none of them gets their own homework back?

Mathematics
1 answer:
Yuri [45]3 years ago
8 0
Assume N students

Student 1 can get (n-1) papers
Student 2 can get (n-1) papers
Student 3 can get (n-1) papers
etc
Student N can get (n-1) papers

So for N students you can have N(n-1)
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Can someone help me please
frozen [14]

Answer:

Statement 2. SX=UX 3. UV=ST   Reasons are below

Step-by-step explanation:

since SVX = UTX and one of their sides are confirmed to be the same length then all sides are equal to each other of those triangles

and since they are the same length then VU and ST = each other

opposite sides are parallel because the angles are the same

and since they have the same side lengths then that means the diagonals bisect each other

5 0
3 years ago
Can u pls help me with this question ​
anastassius [24]

Answer: a or d

Step-by-step explanation:

4 0
2 years ago
Solve for xx. Express your answer as a proper or improper fraction in simplest terms.
kati45 [8]

Answer:

4/5

Step-by-step explanation:

hope this helps :)

4 0
2 years ago
Read 2 more answers
A tape diagram. There are 65 students out of 100 students who ride the bus. There are question mark students out of 800 students
SVEN [57.7K]

Answer:

<em>800÷100 = 8</em>

<em>65×8=520</em>

\frac{520}{800}

another way:

<em>100%-65%=35%</em>

<em>35% = 0.35</em>

<em>800×0.35= 280</em>

<em>800-280=</em>520

another way:

<em>65% = 0.65</em>

<em>0.65×800=</em>520

Hope it helped! :)

6 0
1 year ago
What are the values of x and y?
scZoUnD [109]

Answer:

x is equal to 24 and y is equal to 66.

Step-by-step explanation:

In order to find the value of y, we first have to note that the unlabeled angle in the larger triangle, y and the 78 degree angle create a straight line. The unlabeled angle is equal to 36 since it and the other two angles equal 180. So we take that 36, 78 and y and can set that equal to 180.

36 + 78 + y = 180

114 + y = 180

y = 66

Now that we have that value, we can use y and the 90 degree angle to find x.

x + y + 90 = 180

x + 66 + 90 = 180

x + 156 = 180

x = 24

3 0
3 years ago
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